What is the CVSS score of CVE-2025-64525?

CVE-2025-64525 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L. EPSS exploitation probability: 1.3%.

Which versions of Astro are affected by CVE-2025-64525?

Organizations using Astro should be aware of notable risk from CVE-2025-64525, a server-side request forgery vulnerability rated CVSS 6.5. Users could be tricked into performing unintended actions.. A patch is available.

Is there a public PoC exploit available for CVE-2025-64525?

Yes, a public proof-of-concept exploit is available for CVE-2025-64525. Prioritise patching immediately. EPSS: 1.3%.

How to fix or mitigate CVE-2025-64525?

Within 7 days: Identify affected systems running Astro and apply vendor patches promptly. Vendor patch is available.

Astro CVE-2025-64525

MEDIUM

Server-Side Request Forgery (SSRF) (CWE-918)

2025-11-13 security-advisories@github.com

SSRF Astro

6.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:22 vuln.today

Patch released

Mar 28, 2026 - 19:22 nvd

Patch available

PoC Detected

Nov 25, 2025 - 15:14 vuln.today

Public exploit code

CVE Published

Nov 13, 2025 - 16:15 nvd

MEDIUM 6.5

DescriptionGitHub Advisory

Astro is a web framework. In Astro versions 2.16.0 up to but excluding 5.15.5 which utilizeon-demand rendering, request headers x-forwarded-proto and x-forwarded-port are insecurely used, without sanitization, to build the URL. This has several consequences, the most important of which are: middleware-based protected route bypass (only via x-forwarded-proto), DoS via cache poisoning (if a CDN is present), SSRF (only via x-forwarded-proto), URL pollution (potential SXSS, if a CDN is present), and WAF bypass. Version 5.15.5 contains a patch.

AnalysisAI

Astro is a web framework. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Server-Side Request Forgery (SSRF) (CWE-918), which allows attackers to make the server perform requests to unintended internal or external resources. Astro is a web framework. In Astro versions 2.16.0 up to but excluding 5.15.5 which utilizeon-demand rendering, request headers x-forwarded-proto and x-forwarded-port are insecurely used, without sanitization, to build the URL. This has several consequences, the most important of which are: middleware-based protected route bypass (only via x-forwarded-proto), DoS via cache poisoning (if a CDN is present), SSRF (only via x-forwarded-proto), URL pollution (potential SXSS, if a CDN is present), and WAF bypass. Version 5.15.5 contains a patch. Affected products include: Astro. Version information: Version 5.15.5.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate and allowlist destination URLs, block requests to internal networks, use network segmentation.